1. The Mammoth Site, 1800 Highway 18 ByPass, Hot Springs, SD 57747; Desert Laboratory on Tumamoc Hill, University of Arizona, Tucson, AZ 85721 (JIM)
2. GreaterGood.org, 6262 North Swan Road, Suite 165, Tucson, AZ 85718 (TRVD)
3. Herbarium, University of Arizona, Tucson, AZ 85721 (GMF)
4. 139 West Suffolk Drive, Tucson, AZ 85704 (SH)